U.S. patent application number 14/801772 was filed with the patent office on 2015-11-12 for transmission of delay tolerant data.
The applicant listed for this patent is NOKIA TECHNOLOGIES OY. Invention is credited to Seppo GRANLUND, Arto KARPPANEN, Enrico RANTALA, Eero SILLASTO.
Application Number | 20150326483 14/801772 |
Document ID | / |
Family ID | 39589437 |
Filed Date | 2015-11-12 |
United States Patent
Application |
20150326483 |
Kind Code |
A1 |
GRANLUND; Seppo ; et
al. |
November 12, 2015 |
TRANSMISSION OF DELAY TOLERANT DATA
Abstract
Transmission of delay tolerant data. An apparatus includes a
processor configured to classify data, on the basis of its delay
requirement, into delay tolerant data and into delay critical data,
and to control transmission of the delay tolerant data with a
transmitter in such a manner that the transmission of the delay
tolerant data is timed to coincide with transmission of the delay
critical data.
Inventors: |
GRANLUND; Seppo; (Helsinki,
FI) ; KARPPANEN; Arto; (Helsinki, FI) ;
RANTALA; Enrico; (Iittala, FI) ; SILLASTO; Eero;
(Helsinki, FI) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
NOKIA TECHNOLOGIES OY |
Espoo |
|
FI |
|
|
Family ID: |
39589437 |
Appl. No.: |
14/801772 |
Filed: |
July 16, 2015 |
Related U.S. Patent Documents
|
|
|
|
|
|
Application
Number |
Filing Date |
Patent Number |
|
|
12230407 |
Aug 28, 2008 |
9118575 |
|
|
14801772 |
|
|
|
|
Current U.S.
Class: |
370/236 |
Current CPC
Class: |
H04W 28/02 20130101;
H04W 52/0219 20130101; H04L 47/283 20130101; H04L 47/14 20130101;
Y02D 30/70 20200801; H04W 52/0216 20130101; H04L 47/2433 20130101;
H04L 47/56 20130101; H04W 72/1242 20130101; H04L 47/2441 20130101;
H04L 47/2416 20130101 |
International
Class: |
H04L 12/851 20060101
H04L012/851; H04L 12/841 20060101 H04L012/841 |
Foreign Application Data
Date |
Code |
Application Number |
Jun 30, 2008 |
FI |
20085676 |
Claims
1. An apparatus comprising: a processor configured to classify
data, on the basis of its delay requirement, into delay tolerant
data and into delay critical data, and to control transmission of
the delay tolerant data with a transmitter in such a manner that
the transmission of the delay tolerant data is postponed until
availability of the delay critical data and to coincide with
transmission of the delay critical data, wherein the processor is
further configured to classify the data into the delay tolerant
data whose delay requirement exceeds a predetermined delay
threshold and into the delay critical data whose delay requirement
falls below the predetermined delay threshold.
2. The apparatus of claim 1, wherein the processor is further
configured to signal with the transmitter to a receiver that the
delay tolerant data is transmitted with a delay exceeding the
predetermined delay threshold.
3. The apparatus of claim 1, further comprising a buffer configured
to store the delay tolerant data, and wherein the processor is
further configured to control the transmission of the delay
tolerant data in such a manner that, at transmission time of the
delay critical data, a part of the delay tolerant data fitting with
the simultaneous transmission of the delay critical data is taken
out from the buffer.
4. The apparatus of claim 1, wherein the processor is further
configured to control the transmission of the delay tolerant data
in such a manner that duration of a power save state of a mobile
terminal is maximized.
5. The apparatus of claim 1, wherein the processor is further
configured to control the transmission of the delay tolerant data
in such a manner that a number of radio setups and radio releases
is minimized.
6. The apparatus of claim 1, wherein the processor is further
configured to control the transmission of the delay tolerant data
in such a manner that the transmission of the delay tolerant data
is in parallel with the transmission of the delay critical
data.
7. The apparatus of claim 1, wherein the apparatus comprises at
least one of a mobile terminal comprising a transmitter, and a
network element comprising a transmitter.
8. An apparatus comprising: a processor configured to classify
data, on the basis of its delay requirement, into delay tolerant
data and into delay critical data, and to control transmission of
the delay tolerant data with a transmitter in such a manner that
the transmission of the delay tolerant data is postponed until
availability of the delay critical data and to coincide with
transmission of the delay critical data, the apparatus further
comprising a buffer configured to store the delay tolerant data,
and wherein the processor is further configured to control the
transmission of the delay tolerant data in such a manner that, at
transmission time of the delay critical data, a part of the delay
tolerant data fitting with the simultaneous transmission of the
delay critical data is taken out from the buffer.
9. The apparatus of claim 8, wherein the processor is further
configured to classify the data into the delay tolerant data whose
delay requirement exceeds a predetermined delay threshold and into
the delay critical data whose delay requirement falls below the
predetermined delay threshold.
10. The apparatus of claim 9, wherein the processor is further
configured to signal with the transmitter to a receiver that the
delay tolerant data is transmitted with a delay exceeding the
predetermined delay threshold.
11. The apparatus of claim 8, wherein the processor is further
configured to control the transmission of the delay tolerant data
in such a manner that duration of a power save state of a mobile
terminal is maximized.
12. The apparatus of claim 8, wherein the processor is further
configured to control the transmission of the delay tolerant data
in such a manner that a number of radio setups and radio releases
is minimized.
13. The apparatus of claim 8, wherein the processor is further
configured to control the transmission of the delay tolerant data
in such a manner that the transmission of the delay tolerant data
is in parallel with the transmission of the delay critical
data.
14. The apparatus of claim 8, wherein the apparatus comprises at
least one of a mobile terminal comprising a transmitter, and a
network element comprising a transmitter.
15. An apparatus comprising: a processor configured to classify
data, on the basis of its delay requirement, into delay tolerant
data and into delay critical data, and to control transmission of
the delay tolerant data with a transmitter in such a manner that
the transmission of the delay tolerant data is postponed until
availability of the delay critical data and to coincide with
transmission of the delay critical data, wherein the processor is
further configured to control the transmission of the delay
tolerant data in such a manner that a number of radio setups and
radio releases is minimized.
16. The apparatus of claim 15, wherein the processor is further
configured to classify the data into the delay tolerant data whose
delay requirement exceeds a predetermined delay threshold and into
the delay critical data whose delay requirement falls below the
predetermined delay threshold.
17. The apparatus of claim 16, wherein the processor is further
configured to signal with the transmitter to a receiver that the
delay tolerant data is transmitted with a delay exceeding the
predetermined delay threshold.
18. The apparatus of claim 15, further comprising a buffer
configured to store the delay tolerant data, and wherein the
processor is further configured to control the transmission of the
delay tolerant data in such a manner that, at transmission time of
the delay critical data, a part of the delay tolerant data fitting
with the simultaneous transmission of the delay critical data is
taken out from the buffer.
19. The apparatus of claim 15, wherein the processor is further
configured to control the transmission of the delay tolerant data
in such a manner that duration of a power save state of a mobile
terminal is maximized.
20. The apparatus of claim 15, wherein the processor is further
configured to control the transmission of the delay tolerant data
in such a manner that the transmission of the delay tolerant data
is in parallel with the transmission of the delay critical data.
Description
CROSS REFERENCE TO RELATED APPLICATIONS
[0001] This is a Continuation of U.S. patent application Ser. No.
12/230,407 filed on Aug. 28, 2008, which claims priority of Finnish
Patent Application No. 20085676, filed on Jun. 30, 2008. The
disclosures of the prior applications are hereby incorporated by
reference herein in their entirety. This application is also
related to an application that is being filed the same day as the
present application, also claiming the benefit and priority of U.S.
patent application Ser. No. 12/230,407 and Finnish Patent
Application No. 20085676.
BACKGROUND
[0002] 1. Field
[0003] The invention relates to transmission of delay tolerant
data.
[0004] 2. Description of the Related Art
[0005] Data transmission with various kinds of apparatuses is
becoming more and more common. However, data transmission
strategies require further development.
SUMMARY
[0006] The present invention seeks to provide an improved
apparatus, an improved method, an improved computer program, and an
improved computer-readable storage medium.
[0007] According to an aspect of the present invention, there is
provided an apparatus comprising a processor configured to classify
data, on the basis of its delay requirement, into delay tolerant
data and into delay critical data, and to control transmission of
the delay tolerant data with a transmitter in such a manner that
the transmission of the delay tolerant data is timed to coincide
with transmission of the delay critical data.
BRIEF DESCRIPTION OF THE DRAWINGS
[0008] Embodiments of the present invention are described below, by
way of example only, with reference to the accompanying drawings,
in which
[0009] FIG. 1 illustrates embodiments of an apparatus;
[0010] FIG. 2 illustrates timing of transmission;
[0011] FIGS. 3 and 4 illustrate consumption of battery power;
[0012] FIG. 5 illustrates embodiments of a method; and
[0013] FIG. 6 illustrates the use of a timer.
DETAILED DESCRIPTION
[0014] The following embodiments are exemplary. Although the
specification may refer to "an" embodiment(s) in several locations,
this does not necessarily mean that each such reference is to the
same embodiment(s), or that the feature only applies to a single
embodiment. Single features of different embodiments may also be
combined to provide other embodiments. The present invention is
applicable to any data transmission system that supports the
functionality that will be described in the following. The
protocols and specifications of data transmission systems develop
rapidly. Such development may require extra changes to an
embodiment. Therefore, all words and expressions should be
interpreted broadly and they are intended to illustrate, not to
restrict, the embodiment.
[0015] FIG. 1 only shows some elements and functional entities, all
being logical units whose implementation may differ from what is
shown. The connections shown in FIG. 1 are logical connections; the
actual physical connections may be different. Interfaces between
the various elements may be implemented with suitable interface
technologies, such as a message interface, a method interface, a
sub-routine call interface, a block interface, or any means
enabling communication between functional sub-units. It should be
appreciated that apparatuses may comprise other units. However,
they are irrelevant to the actual invention and, therefore, they
need not be discussed in more detail here. It is also to be noted
that although some elements are depicted as separate, some of them
may be integrated into a single physical element.
[0016] FIG. 1 illustrates embodiments of an apparatus 100. The
apparatus comprises a processor 102 configured to classify data
112, on the basis of its delay requirement 116, into delay tolerant
data 118 and into delay critical data 120. The processor 102 is
also configured to control 122 transmission of the delay tolerant
data 118 with a transmitter 124 in such a manner that the
transmission of the delay tolerant data 118 is timed to coincide
with the transmission of the delay critical data 120. As can be
seen from FIG. 1, the delay tolerant data 118 and the delay
critical data 120 are transmitted over an air interface 130 to a
receiver 132. The classification and the control may be performed
in a unit called scheduler 114.
[0017] The apparatus 100 may be a mobile terminal or a network
element, for example, i.e. the data transmission may be performed
in the uplink direction (from the mobile terminal to the network
element belonging to the fixed network infrastructure) or in the
downlink direction (from the network element to the mobile
terminal). In either case, duration of a battery 128 is an ever
present problem with wireless mobile terminals. By timing the
transmission of the delay tolerant data 118 in such a manner that
it coincides with the transmission of the delay critical data 120,
the data transmission capacity with one charge of the battery 128
will be maximized. The described timing may save the battery
capacity of the mobile terminal both in the transmission of the
delay tolerant data 118 and in the reception of the delay tolerant
data 118. The network element may be a base station, a base
station/radio network controller, a packet control unit, or any
other unit capable of performing the described scheduling.
[0018] FIGS. 3 and 4 illustrate consumption of battery power. In
FIG. 3, delay tolerant data 118 and delay critical data 120 are
transmitted separately from each other and sequentially. This
causes that each transmission 118, 120 has its own radio setups
300, 310 and radio releases 304, 314. As can be seen, battery power
is used by two separate CPU (Central Processing Unit) operations
306, 316 and two separate radio operations 308, 318, and in-between
there is only a short power save state 320. In FIG. 4, transmission
of the delay tolerant data 118 is postponed 414, whereby the delay
tolerant data 118 and the delay critical data 120 are transmitted
in parallel. This causes that there is only one radio setup 310 and
only one radio release 314. Battery power is now used by a short
CPU operation 404, another longer CPU operation 406, and a radio
operation 408. There are now two relatively long power save states
410, 412. The solution illustrated in FIG. 4 uses considerably less
battery power than the solution illustrated in FIG. 3. In parallel
transmission, the radio bearer setup for two packets needs to be
done only once instead of two setups of the sequential
transmission.
[0019] In an embodiment, the processor 102 is configured to control
the transmission of the delay tolerant data 118 in such a manner
that duration of a power save state of a mobile terminal is
maximized.
[0020] In an embodiment, the processor 102 is configured to control
the transmission of the delay tolerant 118 data in such a manner
that the number of radio setups and radio releases is
minimized.
[0021] In an embodiment, the processor 102 is configured to control
the transmission of the delay tolerant data 118 in such a manner
that the transmission of the delay tolerant data 118 is in parallel
with the transmission of the delay critical data 120. In order to
achieve battery power savings, it may be necessary to implement the
parallel transmission in the physical layer, so that length of
power save state and/or the number of radio setups and releases is
optimized. Instead of parallel transmission also sequential
transmission may be utilized. The sequential transmission is
implemented as illustrated in FIG. 4, i.e. in such a manner that
the number of radio setups and releases is minimized and/or the
duration of the power save state is maximized. Such sequential
transmission is still considered coincident. In sequential
transmission, the delay critical data 120 may be transmitted first,
and immediately thereupon the delay tolerant data 118. Also other
ways to implement the coincident transmission may be utilized.
[0022] The data 112 may be wireless packet data. Packets may be
generated in such a manner that delays between successive packets
are relatively long and there may be high delay variation. After
packet generation, the packet needs to be transmitted over a radio
interface in uplink or downlink direction. The average data rate
over a long period may be relatively small.
[0023] Two classes, the delay tolerant data 118 and the delay
critical data 120, may be determined in relation to each other,
rather than in absolute terms. Common sense may be applied to these
definitions: "delay tolerant" implies that more delay is accepted
than with "delay critical". "Delay tolerant" may also imply that a
relatively large delay variation is accepted.
[0024] The delay critical data 120 may be determined from the
user's point of view: it may be data the user is not prepared to
wait for. The delay critical data 120 may even be real-time or
almost real-time data. Voice call, video call, web browsing, VoIP
(Voice over Internet Protocol), push-to-talk, and instant messaging
may be mentioned as examples of the delay critical data 120.
Besides being user data, the delay critical data 120 may also be
data of some other type, such as system data. One example of such
system data is periodic location update signaling between the
mobile terminal and the network element.
[0025] The delay tolerant data 118 determined from the user's point
of view is data the user is prepared to wait for. The suitable
waiting period depends on the type of the data, it could range from
seconds to hours, for example. File download, push e-mail, presence
information, and calendar data may be mentioned as examples of the
delay tolerant data 118.
[0026] Another way to define the difference between the delay
tolerant data 118 and the delay critical data 120 is to use the
Quality of Service (QoS) classes. In UMTS (Universal Mobile
Telephone System), an end-to-end service may belong to one of the
four QoS classes: [0027] conversational class with real-time delay
requirement (voice call, for example); [0028] streaming class with
real-time delay requirement (streaming video, for example); [0029]
interactive class with best effort delay requirement (web browsing,
for example); and [0030] background class with best effort delay
requirement (telemetry or emails, for example).
[0031] Conversational class and streaming class may belong to the
delay critical data 120. Background class may belong to the delay
tolerant data 118. Interactive class may belong wholly to the delay
tolerant data 120, or then a subdivision may also be made: some
aspects of the web browsing belong to the delay critical data 120,
whereas other aspect of the web browsing belong to the delay
tolerant data 118. Web page fetching may be delay critical as the
user is prepared to wait for only a few seconds, whereas with
download of a file from a www server the user may be willing to
wait even for minutes or longer.
[0032] FIG. 1 illustrates that the data 112 may be obtained from
one or more applications 104, 106 operating within the processor
102. It may be possible to determine that data 108 generated by a
first application 104 belongs to the delay tolerant data 118, and,
correspondingly, data 110 generated by a second application 106
belongs to the delay critical data 120, for example. Naturally, it
is not necessary that the data 112 is generated within the
apparatus 100 at all: it is possible that part of the data 112 or
all of the data 112 is generated within another apparatus, and the
data 112 is transmitted, by means of telecommunications or a
memory, for example, to the apparatus 100.
[0033] Typically, data transfer needs are immediate and
instantaneous: the sooner, the better. However, a given application
104 may be configured for background transfer. This may be done by
the user, via a user interface of the mobile terminal, for example.
The user may define "allow calendar synchronization as a background
process", "load selected files on background", or "backup your
files on background" instead of a default value of immediate
action.
[0034] In an embodiment, the processor 102 is configured to signal
with the transmitter 124 to a receiver 132 that the delay tolerant
data 118 is transmitted with a delay exceeding the predetermined
delay threshold. The peer application, with which the application
104 of the apparatus 100 is communicating, may need to understand
as well that there are breaks in communication between peers,
otherwise long scheduling waits (say minutes or tens of minutes)
may lead to the termination of the connection and "unwanted break"
of sessions. All data transfer may need to be started from the
beginning, unless the application 104 has capability to start
reasonably after the intermediate break.
[0035] What about if all delay tolerant data 118 is not yet
transmitted and the transmission of the delay critical data 120 is
ended? Such a situation may occur when the user ends a voice call,
for example. The transmission of the delay tolerant data 118 may
continue in a normal fashion, i.e. without the simultaneous
transmission of the delay critical data 120. Another option is to
suspend the transmission of the delay tolerant data 118 till
transmission of the delay critical data 120 is started again. The
application 104 may need to control that a break in the
transmission is not too long. Ports may need to be closed after
half an hour inactivity for the application 104. If the break is
going to become too long, normal transmission may need to be
used.
[0036] In an embodiment, the processor 102 is configured to
classify the data into the delay tolerant data 118 whose delay
requirement exceeds a predetermined delay threshold and into the
delay critical data 120 whose delay requirement falls below the
predetermined delay threshold. The delay threshold may be
determined with units of time, such as seconds or minutes, for
example.
[0037] In an embodiment, the processor 102 is configured to time
the transmission of the delay tolerant data 118 in such a manner
that the transmission of the delay tolerant data 118 is postponed
to coincide with the transmission of the delay critical data 120.
FIG. 2 illustrates timing of transmission. Broken line boxes 200A,
202A, 204A, 206A illustrate created pieces of delay tolerant data
118. As can be seen from FIG. 2, the transmission of the delay
tolerant data 118 is postponed, i.e. the created pieces 200A, 202A,
204A, 206A of the delay tolerant data 118 are transmitted later,
this is illustrated with boxes 200B, 202B, 204B, 206B, which
coincide with transmitted pieces 208, 210, 212, 214 of the delay
critical data 120. Delays 216, 218, 220, 222 from the starting time
of the creation of the pieces 200A, 202A, 204A, 206A to the
starting time of the transmission of the pieces 200B, 202B, 204B,
206B vary. A careful study of FIG. 2 reveals that "coincide" means
substantially simultaneous transmission of the delay tolerant 118
and the delay critical data 120, i.e. the transmission of the delay
tolerant data 118 need not necessarily start exactly at the same
time as the transmission of the delay critical data 120, nor need
they stop at the same time.
[0038] In an embodiment, the apparatus 100 may comprise a buffer
126 configured to store the delay tolerant data 118. The processor
102 may be configured to control the transmission of the delay
tolerant data 118 in such a manner that, at the transmission time
of the delay critical data 120, a part of the delay tolerant data
118 fitting with the simultaneous transmission of the delay
critical data 120 is taken out from the buffer 126. The filling of
the buffer 126 may be controlled to prevent it from requiring too
much memory space. The application 104 may inform or it may be
asked whether there is delay tolerant data 118 to be transmitted.
The scheduler 114 may even inform the application 104 whether the
buffer 126 is capable of storing any delay tolerant data 118, or
whether delaying of transmission is possible. If the buffer 126
becomes excessively full, the scheduler 114 may control 122 the
transmitter 124 to transmit the delay tolerant data 118, or a
portion of it, even without its transmission coinciding with the
transmission of the delay critical data 120.
[0039] The mobile terminal presents information to the user and
allows the user to input information. In other words, the mobile
terminal may be any terminal capable of wirelessly receiving
information from and/or wirelessly transmitting information to a
(cellular) radio system. The mobile terminal may refer to a
portable mobile communication device operating with or without a
subscriber identification module (SIM), including, but not limited
to, devices of the following type: mobile phone, smartphone,
personal digital assistant (PDA), user equipment, or any other
portable communication device possibly including computer
functionalities or functionalities of other data processing
devices.
[0040] The wireless connection 130 may be implemented with a
wireless transceiver operating according to the GSM (Global System
for Mobile Communications), WCDMA (Wideband Code Division Multiple
Access), WLAN (Wireless Local Area Network) or Bluetooth.RTM.
standard, or any other suitable standard/non-standard wireless
communication means. Besides being implemented in a radio system
with a fixed network infrastructure, the embodiments may be applied
to ad hoc communication network as well. In an ad hoc communication
network, a mobile terminal equipped with a short-range wireless
transceiver operating without a fixed network infrastructure may
communicate with another mobile terminal.
[0041] The apparatus 100 may be implemented as an electronic
digital computer, which may comprise a working memory (RAM), a
central processing unit (CPU), and a system clock. The CPU may
comprise a set of registers, an arithmetic logic unit, and a
control unit. The control unit is controlled by a sequence of
program instructions transferred to the CPU from the RAM. The
control unit may contain a number of microinstructions for basic
operations. The implementation of microinstructions may vary,
depending on the CPU design. The program instructions may be coded
by a programming language, which may be a high-level programming
language, such as C, Java, etc., or a low-level programming
language, such as a machine language, or an assembler. The
electronic digital computer may also have an operating system,
which may provide system services to a computer program written
with the program instructions. If the apparatus 100 is the mobile
terminal, the electronic digital computer may naturally be
miniaturized.
[0042] An embodiment provides a computer program comprising program
code means for performing any of the earlier described operations
when the program is run on the processor 102.
[0043] The computer program may be in source code form, object code
form, or in some intermediate form, and it may be stored in some
sort of carrier, which may be any entity or device capable of
carrying the program, such as a computer-readable storage medium.
Such carriers include a record medium, a computer memory, a
read-only memory, an electrical carrier signal, a
telecommunications signal, and a software distribution package, for
example. Depending on the processing power needed, the computer
program may be executed in a single electronic digital computer or
it may be distributed amongst a number of computers.
[0044] The processor 102 may also be implemented as one or more
integrated circuits, such as application-specific integrated
circuits ASIC. Other hardware embodiments are also feasible, such
as a circuit built of separate logic components. A hybrid of these
different implementations is also feasible. When selecting the
method of implementation, a person skilled in the art will consider
the requirements set for the size and power consumption of the
apparatus 100, necessary processing capacity, production costs, and
production volumes, for example. The scheduler 114 may also be
implemented as a software module in a radio modem coupled with the
transmitter 124.
[0045] In an embodiment, the processor 102 is configured to start a
timer when detecting the delay tolerant data, and if the timer
expires before the transmission of the delay tolerant data 118 is
possible simultaneously with the transmission of the delay critical
data 120, to control the transmitter 124 in such a manner that the
transmission of the delay tolerant data 118 is performed
irrespective of the transmission of the delay critical data 120. In
effect, the timer may be provided for such situation wherein there
is no invocation of a real-time service during a long period. The
best effort data may then be transmitted in a normal fashion after
the timer expiration. FIG. 6 illustrates an embodiment of timer
usage. In 600, delay tolerant data 118 is ready to be transmitted,
and the timer is set (a timeout is set). In 602, a check is made:
is there a connection (used to transmit delay critical data 120)
available. If such a connection is available, 610 is entered and
the delay tolerant data 118 is transmitted simultaneously with the
delay critical data 120. If such a connection is not available, 604
is entered. In 604, the timer is checked. The expiration of the
timer is checked in 606: if the timer is not yet expired, 602 is
entered again, else, 608 is entered in order to establish a
connection (irrespective of the transmission of the delay critical
data 120) and only the delay tolerant data 118 is transmitted.
[0046] Next, a method will be described with reference to FIG. 5.
The method relates to transmission of delay tolerant data. The
method starts in 500 and ends in 510. Other operations, besides
those described in FIG. 5, may also be executed between the
operations or within the operations. The operations described in
FIG. 5 are in no absolute chronological order, and some of the
operations may be performed simultaneously or in an order differing
from the given one.
[0047] In 502, data is classified, on the basis of its delay
requirement, into delay tolerant data and into delay critical data.
In 504, transmission of the delay tolerant data is timed to
coincide with transmission of the delay critical data.
[0048] The method illustrated in FIG. 5 may be enhanced with single
features described earlier, or with a any feasible combination of
those features. FIG. 5 illustrates just two of those embodiments.
In an embodiment 506, the delay tolerant data is stored into a
buffer, and the transmission of the delay tolerant data is timed in
such a manner that, at the transmission time of the delay critical
data, a part of the delay tolerant data fitting with the
simultaneous transmission of the delay critical data is taken out
from the buffer. In an embodiment 508, it is signaled to a receiver
that the delay tolerant data is transmitted with a delay exceeding
the predetermined delay threshold.
[0049] It will be obvious to a person skilled in the art that, as
technology advances, the inventive concept can be implemented in
various ways. The invention and its embodiments are not limited to
the examples described above but may vary within the scope of the
claims.
* * * * *